Seagate External Reformat Mac?

Sep 7, 2011
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Cincinnati, Ohio
I have a Seagate GoFlex 3tb external drive that all the sudden stopped working correctly. I was able to get all files off the drive.

I am trying to reformat it using Disk Utilities Mac OS Extended

I tried to erase the entire disk with no luck and then each partition, no luck.

Disk Verification Error:
"This disk doesn't contain an EFI systme partition. If you want to start up you computer with the disk or include it in a RAID set, back up your data and partition this disk"

So I'm not too sure what to do at this point. Any suggestions?

Drive is just a little over 1 year old. : (

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